Excited state proton transfer of pyranine in a γ-cyclodextrin cavity

被引：103

作者：

Mondal, SK ^{[1
]}

Sahu, K ^{[1
]}

Sen, P ^{[1
]}

Roy, D ^{[1
]}

Ghosh, S ^{[1
]}

Bhattacharyya, K ^{[1
]}

机构：

[1] Indian Assoc Cultivat Sci, Dept Chem Phys, Kolkata 700032, W Bengal, India

来源：

CHEMICAL PHYSICS LETTERS | 2005年 / 412卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2005.07.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Excited state proton transfer of pyranine (8-hydroxypyrene-1,3,6-trisulfonate, HPTS) in gamma-cyclodextrin (gamma-CD) is studied using picosecond and femtosecond fluorescence spectroscopy. It is shown that confinement of pyranine in gamma-CD cavity accelerates recombination of the geminate ion pair and slows down the initial proton transfer step and the dissociation of the geminate ion pair. This results in enhanced emission from the protonated species. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：228 / 234

页数：7

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